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HTTP Status Codes Cheat Sheet
Print-ready cheat sheet for HTTP Status Codes, organized for fast lookup, study, and desk-side use
Sample
What's in this cheat sheet
1xx Codes
100 | Continue — server received headers, client should send body |
101 | Switching Protocols — upgrading to WebSocket or HTTP/2 |
102 | Processing — server received request, still working (WebDAV) |
103 | Early Hints — preload resources before final response |
Usage Note
# 100 Continue: client sends Expect header, waits for 100
curl -H "Expect: 100-continue" -d @large.json URL
# 101: upgrade to WebSocket
Connection: Upgrade / Upgrade: websocket
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